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꽃 빗살
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ZjvBHEJhCU |
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Propylene, also known as propene or methylethylene, is a molecule made up of three carbon atoms and six hydrogen atoms. A gas at room temperature, propylene here on Earth is a byproduct of oil refining, natural gas processing, and various forms of combustion, including automobile emissions and cigarette smoke. It is also produced naturally by some plants. |
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Dominique |
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2019-05-30 12:55:26 |
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